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【多选题】
人像特征的选取应遵循哪些原则A.
尽量利用那些习惯性的动态特征和特殊的个人着装、佩饰特征
B.
注意选择人像的特殊标记特征，如瘤、痣、歪嘴、缺指等
C.
以检材人像为主，先整体、后局部、再细节，注意选取特征价值高的局部和细节特征
D.
局部特征和细节特征出现率高，有价值，如特殊标记特征
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【单选题】According to the text．which of the following is NOT true?
A.
Soil forms from weathered rock on the earth suce．
B.
The deeper layer of soil is darker in colour than t}le suce soil．
C.
Air pollution is partially responsible for acid soil．
D.
Groundwater tends to carry away nutrients for plant growth．
【单选题】is used to ensure the confidentiality, integrity and authenticity of the two end points in the private network.(67), an application-layer protocol, authenticates each peer in an IPsec transaction. IKE...
A.
Certificate
B.
Encryption
C.
Tunnel
D.
Presentation
【简答题】● (66) is a channel's capacity which directly reflects the data transfer rate of the channel. (67) functions in a NetWare network which is used to define addressing schemes. (68) is a network layer de...
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